Heater guard



FIG. 1 is a perspective view of heater guard showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 shows the design when used in a heater.

The broken line showing is included for the purpose of illustrating environment and forms no part of the claimed design. 

The ornamental design for heater guard, as shown and described. 